Operating instructions

61
Table 44 — 30XA Minimum and Maximum Cooler Flow Rates
LEGEND
*For applications requiring cooler leaving water temperature operation at less than
40 F (4.4 C), the units require the use of antifreeze and application may require
the brine option. Contact your local Carrier representative for more information.
†For applications requiring cooler entering water temperature operation at less
than 45 F (7.2 C), contact your local Carrier representative for unit selection using
the Carrier electronic catalog.
NOTES:
1. The 30XA units will start and pull down with loop temperatures up to 95 F (35 C).
2. Nominal flow rates required at AHRI conditions 44 F (7 C) leaving fluid tempera-
ture, 54 F (12 C) entering water temperature, 95 F (35 C) ambient. Fouling factor
0.00010 ft
2
-hr-F/Btu (0.000018 m
2
-K/kW).
3. To obtain proper temperature control, cooler loop fluid volume must be at least
3 gal/ton (3.23 L/kW) of chiller nominal capacity for air conditioning and at least
6 gal/ton (6.5 L/kW) for process applications or systems that must operate in low
ambient temperatures (below 32 F [0° C]).
ITEM MINIMUM MAXIMUM
Cooler Leaving Water Temperature* 40 F (4.4 C) 60 F (15 C)
Cooler Entering Water Temperature† 45 F (7.2 C) 70 F (21.1 C)
30XA
UNIT SIZE
Nominal Flow Rate
Cooler
Number of
Passes
Minimum Flow Rate Maximum Flow Rate
(gpm) (L/s) (gpm) (L/s) (gpm) (L/s)
80 180.4 11.4
Standard, Flooded 2 95 6 379 23.9
Plus One Pass, Flooded 3 43 2.7 192 12.1
Minus One Pass, Flooded 1 196 12.4 782 49.3
82 172.8 10.9 DX Cooler — 86 5.4 346 21.8
90 201.9 12.7
Standard, Flooded 2 101 6.4 403 25.4
Plus One Pass, Flooded 3 43 2.7 200 12.6
Minus One Pass, Flooded 1 229 14.4 917 57.9
92 193.7 12.2 DX Cooler — 97 6.1 387 24.4
100 225.5 14.2
Standard, Flooded 2 101 6.4 403 25.4
Plus One Pass, Flooded 3 43 2.7 200 12.6
Minus One Pass, Flooded 1 229 14.4 917 57.9
102 214.3 13.5 DX Cooler — 107 6.7 429 27.0
110 244.9 15.5
Standard, Flooded 2 125 7.9 501 31.6
Plus One Pass, Flooded 3 61 3.8 244 15.4
Minus One Pass, Flooded 1 254 16 1014 64
112 235.2 14.8 DX Cooler — 118 7.4 470 29.6
120 264.8 16.7
Standard, Flooded 2 125 7.9 501 31.6
Plus One Pass, Flooded 3 73 4.6 293 18.5
Minus One Pass, Flooded 1 281 17.7 1124 70.9
122 254.7 16.0 DX Cooler — 127 8.0 509 32.1
140 317.8 20.1
Standard, Flooded 2 134 8.5 538 33.9
Plus One Pass, Flooded 3 73 4.6 293 18.5
Minus One Pass, Flooded 1 324 20.4 1296 81.8
142 303.5 19.1 DX Cooler — 152 9.6 607 38.2
160 365.1 23
Standard, Flooded 2 165 10.4 660 41.6
Plus One Pass, Flooded 3 98 6.2 391 24.7
Minus One Pass, Flooded 1 354 22.3 1418 89.5
162 347 21.9 DX Cooler — 174 10.9 694 43.7
180 409.6 25.8
Standard, Flooded 2 202 12.7 807 50.9
Plus One Pass, Flooded 3 73 4.6 391 24.7
Minus One Pass, Flooded 1 416 26.2 1662 104.9
182 401.7 25.3 DX Cooler — 201 12.6 803 50.6
200 463.9 29.3
Standard, Flooded 2 223 14.1 892 56.3
Plus One Pass, Flooded 3 98 6.2 391 24.7
Minus One Pass, Flooded 1 458 28.9 1833 115.6
202 447.1 28.2 DX Cooler — 224 14.1 894 56.3
220 505.9 31.9
Standard, Flooded 2 235 14.8 941 59.4
Plus One Pass, Flooded 3 122 7.7 489 30.9
Minus One Pass, Flooded 1 501 31.6 2004 126.4
222 493 31.1 DX Cooler — 246 15.5 950 59.9
240 545.8 34.4
Standard, Flooded 2 266 16.8 1063 67.1
Plus One Pass, Flooded 3 147 9.3 587 37
Minus One Pass, Flooded 1 538 33.9 2151 135.7
242 530 33.5 DX Cooler — 265 16.7 950 59.9
260 600.3 37.9
Standard, Flooded 2 257 16.2 1027 64.8
Plus One Pass, Flooded 3 141 8.9 562 35.5
Minus One Pass, Flooded 1 584 36.8 2334 147.3
262 583 36.8 DX Cooler — 292 18.4 950 59.9
280 642.2 40.5
Standard, Flooded 2 293 18.5 1173 74
Plus One Pass, Flooded 3 141 8.9 562 35.5
Minus One Pass, Flooded 1 620 39.1 2481 156.5
282 627 39.5 DX Cooler — 313 19.8 950 59.9
300 687.5 43.4
Standard, Flooded 2 327 20.6 1308 82.5
Plus One Pass, Flooded 3 174 11 697 44
Minus One Pass, Flooded 1 687 43.3 2750 173.5
302 665 42.0 DX Cooler — 333 21.0 1331 83.9
325 733.4 46.3
Standard, Flooded 2 361 22.8 1442 91
Plus One Pass, Flooded 3 211 13.3 843 53.2
Minus One Pass, Flooded 1 724 45.7 2897 182.8
327 720 45.4 DX Cooler — 360 22.7 1440 90.8
350 775.4 48.9
Standard, Flooded 2 379 23.9 1516 95.6
Plus One Pass, Flooded 3 244 15.4 978 61.7
Minus One Pass, Flooded 1 767 48.4 3068 193.6
352 757 47.8 DX Cooler — 379 23.9 1514 95.5
400 917.6 57.9
Standard, Flooded 1 501 31.6 2004 126.4
Plus One Pass, Flooded — — — — —
Minus One Pass, Flooded — — — — —
450 1019.3 64.3
Standard, Flooded 1 501 31.6 2004 126.4
Plus One Pass, Flooded — — — — —
Minus One Pass, Flooded — — — — —
500 1092.8 68.9
Standard, Flooded 1 501 31.6 2004 126.4
Plus One Pass, Flooded — — — — —
Minus One Pass, Flooded — — — — —
DX — Direct Expansion